What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 33653-7: Beta galactosidase (WBC) [Entitic Catalytic Activity]

Name: LOINC Code 33653-7: Beta galactosidase (WBC) [Entitic Catalytic Activity]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

33653-7 is a LOINC code used to identify Beta galactosidase (WBC) [Entitic Catalytic Activity] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Beta galactosidase. It is commonly used with the system or sample type WBC.

Reviewed by HealthAssure Clinical TeamUpdated 25 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Beta galactosidase. It is commonly used with the system or sample type WBC.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE
Order vs observation: Both

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Beta galactosidase [Entitic Catalytic Activity] in Leukocytes
Beta galactosidase
B; B-Galactosidase; Chemistry; Disaccharidase; Entitic catalytic activity; GM 1-gangliosidosis; Lactase; Leukocytes; Morquio disease type B; MPS IV B; Point in time; QNT; Quan; Quant; Quantitative; Random; WBCs; White blood cells

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Beta galactosidase (WBC) [Entitic Catalytic Activity] (33653-7)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Beta galactosidase (WBC) [Entitic Catalytic Activity]Beta galactosidase [Entitic Catalytic Activity] in LeukocytesB-Galactosidase WBC QnBeta galactosidaseCHEMBeta galactosidase, White blood cellsEntCat

Frequently asked questions

Code details

Code33653-7

SystemLOINC

Display nameBeta galactosidase (WBC) [Entitic Catalytic Activity]

DescriptionBeta galactosidase

Short nameB-Galactosidase WBC Qn

ComponentBeta galactosidase

PropertyEntCat

TimingPt

System (specimen)WBC

ScaleQn

ClassCHEM

Example unitsU/10*10 cells

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.70

Consumer names

Beta galactosidase, White blood cells

Part names

Beta galactosidaseEntCatPtWBCQnEntitic Catalytic ActivityPoint in time (spot)White blood cells

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.